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Justin Timberlake and Mila Kunis talk about their great chemistry in the new romantic comedy, "Friend with Benefits." Also, Justin chats about baring his behind in the movie, but did Mila use Justin as her body double? (Published Tuesday, March 4, 2014)

Justin Timberlake isn't one to stand up a date.

This weekend, the singer and "In Time" star made good on the promise he made this past summer when he agreed to accompany Marine Corporal Kelsey De Santis, who had filmed a YouTube video asking Timberlake to be her date.

De Santis' video was in response to a similar video shot by Marine Sergeant Scott Moore, who asked Timberlake's "Friends with Benefits" co-star Mila Kunis to the North Carolina Marine ball (which is being held November 18th). Kunis agreed after being good-naturedly pressured by Timberlake.

The 30-year-old Timberlake found the event to be "one of the most moving evenings I have ever had" according to a post on his official web site.

He also had extremely kind words for his date:

"[De Santis] seemed to be so humble and honest... Very cool," wrote Timberlake. "She also simultaneously seemed like she was nervous about the whole evening and if I was going to enjoy myself...I have to tell you, it's not every day that I meet a 23 year old girl and she's more worried about if I'm having fun or if I'm comfortable! It hit me all of a sudden that these were the type of people that look after us and our freedom... Humble, concerned for others before themselves... This was the type of person our Marine Corps was building. I was really blown away."

He then admitted that he was nearly brought to tears during a video montage showing images from Pearl Harbor, World War II, and September 11th.

"I've met so many of my heroes -- from Michael Jordan to Michael Jackson -- and nothing makes me feel more honor and pride than when I get to meet one of you," Timberlake added, referring to those who serve. "Last night changed my life and I will never forget it."